minimum amount of stimulus energy that must be present for the stimulus to be detected 50% of the time
afterimage
continuation of a visual sensation after removal of the stimulus
amplitude
height of a wave
basilar membrane
thin strip of tissue within the cochlea that contains the hair cells which serve as the sensory receptors for the auditory system
binaural cue
two-eared cue to localize sound
binocular cue
cue that relies on the use of both eyes
binocular disparity
slightly different view of the world that each eye receives
bottom-up processing
system in which perceptions are built from sensory input
closure
organizing our perceptions into complete objects rather than as a series of parts
cochlea
fluid-filled, snail-shaped structure that contains the sensory receptor cells of the auditory system
cochlear implant
electronic device that consists of a microphone, a speech processor, and an electrode array to directly stimulate the auditory nerve to transmit information to the brain